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US 12,588,070 B2Granted
Physical random access channel (PRACH) configurations for subcarrier spacing (SCS)
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJohan Axnäs, Stephen Grant, Peter Alriksson, Emma Wittenmark
Life of this patent
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Abstract
A method, system and apparatus are disclosed. According to some embodiments, a wireless device is provided. The wireless device includes processing circuitry configured to and/or that operates to: select at least one slot from a plurality of slots that correspond to a first subcarrier spacing, SCS, greater than 120 kHz where each of the at least one slot includes at least physical random access channel, PRACH, occasion, and cause PRACH signaling based on the at least one slot.
Claims14
A method implemented by a wireless device for physical random access channel, PRACH, signaling, the method comprising:
- obtaining an integer number, N, from a field in a table which indicates a number of at least one slot to be selected from a plurality of slots corresponding to a first subcarrier spacing, SCS;
- selecting at least one slot from the plurality of slots corresponding to the first SCS greater than 120 kHz, each of the at least one slot including at least one physical random access channel, PRACH, occasion, the plurality of slots having a time duration equivalent to a time duration of a single slot corresponding to a second SCS lower than the first SCS, and:
- when the field in the table indicates N=1, the selecting at least one slot from the plurality of slots corresponding to the first SCS comprises selecting a last slot from the plurality of slots;
- and
- the plurality of slots are numbered starting from 0 in ascending order;
- when a total number of slots of the plurality of slots corresponding to the first SCS is 8, the selected slot is slot number 7;
- when the total number of slots of the plurality of slots corresponding to the first SCS is 16, the selected slot is slot number 15;
- and
- transmitting the PRACH signaling within the at least one PRACH occasion in the at least one selected slot.
6 more elements
A wireless device comprising:
- processing circuitry configured to:
- obtain an integer number, N, from a field in a table which indicates a number of at least one slot to be selected from a plurality of slots corresponding to a first subcarrier spacing, SCS;
- select at least one slot from the plurality of slots corresponding to the first SCS greater than 120 kHz, each of the at least one slot including at least one physical random access channel, PRACH, occasion, the plurality of slots having a time duration equivalent to a time duration of a single slot corresponding to a second SCS lower than the first SCS, and:
- when the field in the table indicates N=1, the selecting at least one slot from the plurality of slots corresponding to the first SCS comprises selecting a last slot from the plurality of slots;
- and
- the plurality of slots are numbered starting from 0 in ascending order;
- when a total number of slots of the plurality of slots corresponding to the first SCS is 8, the selected slot is slot number 7;
- when the total number of slots of the plurality of slots corresponding to the first SCS is 16, the selected slot is slot number 15;
- and
- cause transmission of PRACH signaling within the at least one PRACH occasion in the at least one selected slot.
7 more elements
A method implemented by a network node, the method comprising:
- receiving physical random access channel, PRACH, signaling within at least one PRACH occasion in a PRACH slot, the PRACH slot being one of a plurality of slots corresponding to a first subcarrier spacing, SCS, greater than 120 kHz, and the plurality of slots corresponding to the first SCS having a time duration equivalent to a time duration of a single slot corresponding to a second SCS lower than the first SCS;
- performing at least one action based at least on the PRACH signaling;
- and
- the PRACH signaling being based on an integer number, N, from a field in a table which indicates a number of at least one slot to be selected from the plurality of slots corresponding to the first SCS, and:
- when the field in the table indicates N=1, the selection of at least one slot from the plurality of slots corresponding to the first SCS comprises a selection of a last slot from the plurality of slots;
- and
- the plurality of slots are numbered starting from 0 in ascending order;
- when a total number of slots of the plurality of slots corresponding to the first SCS is 8, the selected slot is slot number 7;
- when the total number of slots of the plurality of slots corresponding to the first SCS is 16, the selected slot is slot number 15.
6 more elements
A network node comprising:
- processing circuitry configured to:
- receive physical random access channel, PRACH, signaling within at least one PRACH occasion in a PRACH slot, wherein the PRACH slot is one of a plurality of slots corresponding to a first subcarrier spacing, SCS, greater than 120 kHz, and the plurality of slots corresponding to the first SCS has a time duration equivalent to a time duration of a single slot corresponding to a second SCS lower than the first SCS;
- perform at least one action based at least on the PRACH signaling;
- and
- the PRACH signaling being based on an integer number, N, from a field in a table which indicates a number of at least one slot to be selected from the plurality of slots corresponding to the first SCS, and:
- when the field in the table indicates N=1, the selection of at least one slot from the plurality of slots corresponding to the first SCS comprises a selection of a last slot from the plurality of slots;
- and
- the plurality of slots are numbered starting from 0 in ascending order;
- when a total number of slots of the plurality of slots corresponding to the first SCS is 8, the selected slot is slot number 7;
- when the total number of slots of the plurality of slots corresponding to the first SCS is 16, the selected slot is slot number 15.
7 more elements
Dependencies are inferred from the claim text.